A number pattern that extends by 10 has a constant increase of ten from one term to the next; the learner continues sequences within 0–100 by identifying the next number as ten greater, including patterns that cross a decade. Place-value and number-line representations show that the ones digit stays the same while the tens digit increases by one, laying foundations for efficient addition and understanding the base-ten system without extending to larger numbers or formal algebraic rules.
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To extend a pattern by , add ten to each number.
Look at this pattern:
Compare the first two numbers:
The number increased by .
Add to :
Check the place values. The ones digit stays , while the tens digit increases by :
So, the missing number is:
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